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Finding the Fourth Proportional to 422,440.55, 582,772.55 and 374,091.75

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Solution

The fourth proportional to 422,440.55, 582,772.55 and 374,091.75 is: 516,073.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,440.55 : 582,772.55 = 374,091.75 : x
  2. Step 2: Convert to fraction form
    422,440.55/582,772.55 = 374,091.75/x
  3. Step 3: Cross multiply
    422,440.55x = 582,772.55 × 374,091.75
  4. Step 4: Simplify right side
    422,440.55x = 218,010,404,799.25
  5. Step 5: Solve for x
    x = 218,010,404,799.25/422,440.55
  6. Step 6: Final answer
    x = 516,073.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.